tree

Swamp Bloodwood, Spring Bloodwood

Corymbia ptychocarpa

The Story

Plant Bio

Corymbia ptychocarpa, commonly known as the swamp bloodwood, is a small to medium-sized evergreen tree native to northern Australia, distinguished by its rough, fibrous bark and large, leathery leaves with a pale yellow midrib. The terminal clusters of vibrant pink to red flowers emerge in heavy flushes, followed by large, woody, barrel-shaped fruits that hang decoratively from the weeping branchlets.

Unlike most bloodwoods, this species is uniquely adapted to damp soils and seasonal waterlogging along stream banks and swamp margins. Young specimens often exhibit a somewhat crooked, weeping habit before developing a broad, spreading crown of glossy foliage with bronze-toned new growth.

Uses & Benefits:

Features large, glossy leaves with bronze new growth, thick tessellated bark, and vibrant pink to red flower clusters.

Tolerates seasonal waterlogging and coastal salt spray, making it highly useful for stabilizing wet soils and coastal windbreaks.

Provides a high-value nectar source for honeyeaters, lorikeets, native bees, and other beneficial insects.

Essentials

At a Glance

Plant Type

Tree

Height

394 inches

Width

315 inches

Light

Full Sun

Zones

9, 10

Water

Medium

Humidity

High

Lifespan

Long-lived

Native To

Australia

Toxicity

Mildly toxic to pets (foliage essential oils)

Bloom period

Summer – Autumn

In flower about 4 months of the year

Planting

How to Grow

Select a planting site in full sun with deep, sandy or loamy soil that mimics its native alluvial habitat.
Dig a hole twice as wide as the root ball and of equal depth, ensuring the surrounding soil is loosened.
Position the tree in the hole, backfill with native soil without adding organic matter, and water in thoroughly to settle the roots.
Apply a thick layer of organic mulch around the base, keeping it clear of the trunk to prevent collar rot.
Water regularly during the first two growing seasons to establish a deep root system, particularly in drier climates.

Pro Tip

Avoid aggressive hard-pruning below the epicormic zone or into bare wood, as this can kill the tree; limit pruning to light shaping and removing damaged limbs.

Keep It Thriving

Care Guide

Do

Water deeply during extended dry periods to maintain vigor, especially while the tree is establishing.
Apply a low-phosphorus native-specific fertiliser sparingly in early spring.
Ensure the planting site has adequate sub-surface drainage, even when planting near wet areas.

Don't

Do not prune heavily into old, bare wood, as this can severely damage or kill the tree.
Do not plant in permanently stagnant, waterlogged sumps without drainage, which leads to root rot.
Do not use standard high-phosphorus garden fertilisers.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Specimen treeShade treeCoastal gardensWindbreakWetland margins

Companion Plants

Melaleuca quinquenervia Lomandra longifolia Banksia robur

Multiply

Propagation Methods

Good to Know

Common Questions

Swamp Bloodwood, Spring Bloodwood questions

What zones can Swamp Bloodwood, Spring Bloodwood grow in?

Swamp Bloodwood, Spring Bloodwood is hardy in USDA Zones 9–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does Swamp Bloodwood, Spring Bloodwood bloom?

Swamp Bloodwood, Spring Bloodwood typically blooms in summer through autumn. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Swamp Bloodwood, Spring Bloodwood need full sun?

Swamp Bloodwood, Spring Bloodwood does best in full sun (6+ hours).

Is Swamp Bloodwood, Spring Bloodwood drought tolerant?

Yes — once established (usually after the first full season), Swamp Bloodwood, Spring Bloodwood handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.